过共晶Al-22Si合金的切削加工性能研究

发布时间：2018-01-17 02:30

本文关键词：过共晶Al-22Si合金的切削加工性能研究　出处：《成组技术与生产现代化》2016年04期 　论文类型：期刊论文

更多相关文章： 过共晶Al-Si合金 粗糙度 硬度 铣削力

【摘要】：采用金属铸造法制备过共晶Al-22Si合金试样块,在光学显微镜上观察细化变质后过共晶Al-22Si合金的微观组织形貌,并测试其布氏硬度值和铣削表面粗糙度.通过正交试验探究轴向切深、进给量、铣刀转速对铣削力的影响.实验结果表明:细化变质后的过共晶Al-22Si合金初晶硅尺寸减小,共晶硅呈短棒状,合金硬度很高,铣削表面粗糙度较小;在铣削加工中,铣刀转速对合金铣削力的影响最大,其次是轴向切深,最小的是进给量.
[Abstract]:The sample blocks of hypereutectic Al-22Si alloy were prepared by metal casting, and the microstructure of the modified hypereutectic Al-22Si alloy was observed by optical microscope. The Brinell hardness and milling surface roughness were tested. The axial tangent depth and feed rate were investigated by orthogonal test. The effect of milling cutter speed on milling force. The experimental results show that the size of primary silicon of the modified hypereutectic Al-22Si alloy is reduced, the eutectic silicon is short rod shape, the hardness of the alloy is very high, and the surface roughness of milling is small. In milling, the milling cutter speed has the greatest influence on the milling force of the alloy, followed by the axial tangent depth and the minimum feed quantity.
【作者单位】：沈阳理工大学机械工程学院;
【分类号】：TG506
【正文快照】： 过共晶铝硅合金具有密度小、比强度高、轻质、耐磨等特点,主要应用于汽车发动机活塞和车架、飞机壳体等,在机械行业的应用日益广泛[1-2].但是,铝硅合金在车、铣削加工过程中有严重的黏刀倾向,常常在前刀面上形成非常坚硬的金属堆积物.这种堆积物被业界称为积屑瘤.积屑瘤在切削

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